Sata controller passthrough. VM no bootable device

[jmccoy555]

@impovich Ah yeah. Only passed though a controller to Linux VMs and that works fine. Could try TrueNAS Scale??

https://forums.freebsd.org/threads/dev-ad4-becomes-dev-ada0.29899/ Any help?

I'm out of ideas I'm afraid.

[impovich]

@jmccoy555 said in Sata controller passthrough. VM no bootable device:

@impovich Ah yeah. Only passed though a controller to Linux VMs and that works fine. Could try TrueNAS Scale??

https://forums.freebsd.org/threads/dev-ad4-becomes-dev-ada0.29899/ Any help?

I'm out of ideas I'm afraid.

I tried to do the same with Debian, no success. Reading freebsd forum regarding labeling

[jmccoy555]

@impovich Passing though my second onbord SATA controller to a Debian 10 VM gives me xvda for the virtual disk and sda, sdb, etc for discs on the passed though controller.

[impovich]

@jmccoy555 so managed to do it with a dirty hack

1. Spwaned a new VM with 3 virtual drives
   ada0 - 5gb
   ada1 - 5gb
   ada2 - 50gb
2. installed Truenas on ada2.
3. After installation removed ada0 and ada1
4. Rebooted VM and confirmed that ada2 is still ada2
5. passed through SATA controller
6. Bingo!!

root@truenas[~]# geom disk list
Geom name: ada2
Providers:
1. Name: ada2
   Mediasize: 53687091200 (50G)
   Sectorsize: 512
   Mode: r1w1e2
   descr: (null)


Geom name: cd0
Providers:
1. Name: cd0
   Mediasize: 0 (0B)
   Sectorsize: 2048
   Mode: r0w0e0
   descr: QEMU QEMU DVD-ROM
   ident: (null)

Geom name: ada0
Providers:
1. Name: ada0
   Mediasize: 4000787030016 (3.6T)
   Sectorsize: 512
   Stripesize: 4096
   Stripeoffset: 0
   Mode: r0w0e0
   descr: ST4000LM024-2U817V
   lunid: 5000c500d5

   fwheads: 16

Geom name: ada1
Providers:
1. Name: ada1
   Mediasize: 4000787030016 (3.6T)
   Sectorsize: 512
   Stripesize: 4096
   Stripeoffset: 0
   Mode: r0w0e0

[impovich]

Finally, I found a solution to the issue:
https://www.truenas.com/community/threads/multiple-ada0-partitions-on-xen-pv-w-passthrough.16574/

set via GUI tunables interface:

hint.ada.0.at="scbus100".

Works perfectly!

root@truenas[~]# geom disk list
Geom name: ada0
Providers:
1. Name: ada0
   Mediasize: 53687091200 (50G)
   Sectorsize: 512
   Mode: r1w1e2
   descr: (null)
   ident: (null)
   rotationrate: unknown
   fwsectors: 0
   fwheads: 0

Geom name: cd0
Providers:
1. Name: cd0
   Mediasize: 0 (0B)
   Sectorsize: 2048
   Mode: r0w0e0
   descr: QEMU QEMU DVD-ROM
   ident: (null)
   rotationrate: unknown
   fwsectors: 0
   fwheads: 0

Geom name: ada1
Providers:
1. Name: ada1
   Mediasize: 4000787030016 (3.6T)
   Sectorsize: 512
   Stripesize: 4096
   Stripeoffset: 0
   Mode: r0w0e0
   descr: ST4000LM024-2U817V
   lunid: 5000c500d5b4af0c
   ident: WCK7ABLM
   rotationrate: 5400
   fwsectors: 63
   fwheads: 16

Geom name: ada2
Providers:
1. Name: ada2
   Mediasize: 4000787030016 (3.6T)
   Sectorsize: 512
   Stripesize: 4096
   Stripeoffset: 0
   Mode: r0w0e0
   descr: ST4000LM024-2U817V
   lunid: 5000c500d5b3d1cb
   ident: WCK7ADS1
   rotationrate: 5400
   fwsectors: 63
   fwheads: 16

[jmccoy555]

@impovich How odd that that can even happen. I still prefer the hack

[jmccoy555]

@impovich I'm running with a 10gb boot drive if you want to save a bit of space, speed up backups etc.

[impovich]

@jmccoy555 sorry but didn't get it. I'm a newbie

[jmccoy555]

@impovich just saying 50gb is quite big for TrueNAS, but not a problem.

[impovich]

@jmccoy555 got it. Thank you for being with me during this amazing journey